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Finding the Fourth Proportional to 789.00, 1,088.26 and 670.15

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Solution

The fourth proportional to 789.00, 1,088.26 and 670.15 is: 924.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.00 : 1,088.26 = 670.15 : x
  2. Step 2: Convert to fraction form
    789.00/1,088.26 = 670.15/x
  3. Step 3: Cross multiply
    789.00x = 1,088.26 × 670.15
  4. Step 4: Simplify right side
    789.00x = 729,300.89
  5. Step 5: Solve for x
    x = 729,300.89/789.00
  6. Step 6: Final answer
    x = 924.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.